#extension GL_ARB_draw_instanced : require
#extension GL_EXT_gpu_shader4 : require

attribute vec3 _inPos;
attribute vec3 _inNor;

void main()
{
	vec3 p;
	p = _inPos;
	p.y += float(gl_VertexID);
	p.y += float(gl_InstanceIDARB);
	p += _inNor;
	gl_Position = vec4(p,1.0);
	gl_PointSize = p.x;
}